TX4939XBG-400 Toshiba, TX4939XBG-400 Datasheet - Page 418

• Manufacturer Part Number: TX4939XBG-400
• Manufacturer: Toshiba

Specifications of TX4939XBG-400

• Cpu Core: TX49/H4 90nm
• Clock Mhz/max Mips: 400/520
• Inst./data Cache: 32KB (4 Way)/32KB (4 Way)
• Tlb: x
• 1cycle Mac: x
• Volts (v): 1.25/2.5/3.3
• Peripherals: DDR, NAND, ATA, ETHERNET, SECURITY, FPU, MMU, SPI, I2S, I2C, PCI, VIDEO, UART, TIMER, RTC
• Companion Chip: TC86C001FG
• Package: PGBA456

PCIC
16.4.33. G2P I/O Space G-Bus Base Address Register (G2PIOGBASE)
Rev. 3.1 November 1, 2005
Bit
63:38
37
36
35:8
7:0
Default
Default
Default
Default
NAME
NAME
NAME
NAME
TYPE
TYPE
TYPE
TYPE
Mnemonic
BSWAP
EXFER
BA[35:8]
63
47
31
15
62
46
30
14
Field Name
Rsvd
Byte Swap
Endian Transfer
Base Address
Rsvd
61
45
29
13
Figure 16-44 G2P I/O Space G-Bus Address Register
Table 16-45 G2P I/O Space G-Bus Address Register
60
44
28
12
BA[15:8]
0x00
R/W
RESERVED
59
43
27
11
Description
Byte Swap Disable
(Default: Little Endian Mode: 0x1; Big Endian Mode: 0x0) Sets the byte
swapping of the I/O space.
1: Do not perform byte swapping.
0: Perform byte swapping.
Please use the default state in most situations. If this bit is changed to “1”
when in the Big Endian Mode, the byte order of transfer to the I/O Memory
Space through DWORD (32-bit) access will not change.
See detail in 16.3.10 Endian Switching Function
Endian Transfer
(Default: Little Endian Mode: 0x0; Big Endian Mode: 0x1)
Sets the Endian Transfer of the I/O Space.
1: Performs Endian Transfer.
0: Does not perform Endian Transfer.
Please use the default state.
See detail in 16.3.10 Endian Switching Function
Base Address (Default: 0x0_0000_00)
Sets the G-Bus base bus address of the I/O Memory Space for initiator
access.
Can set the base address in 256-byte units.
58
42
26
10
57
41
25
9
16-54
RESERVED
56
40
24
BA[31:16]
8
0x0000
R/W
55
39
23
7
54
38
22
6
BSWAP EXFER
0x0/0x
R/W
53
37
21
1
5
0x1/0x
RESERVED
R/W
52
36
20
Toshiba RISC Processor
0
4
0x00
R
51
35
19
3
50
34
18
BA[35:32]
2
R/W
0x0
49
33
17
1
R/W
⎯
R/W
R/W
R/W
R
TX4939
48
32
16
0
16
16